Computer terminal message control

ABSTRACT

A TERMINAL WHICH INCLUDES AN ADDRESSABLE MESSAGE BUFFER FOR STORING FIELD OF DATA, THE FIELDS BEING DEFINED AS A GROUP OF CONSECUTIVE CHARACTERS STARTING WITH A FIELD DEFINING CHARACTER FOLLOWED BY ALPHAMERIC CHARACTERS AND TERMINATED BY A FIELD DEFINING CHARACTER WHICH DEFINES THE BEGINNING OF THE NEXT FIELD. THE FIELD DEFINING CHARACTER DEFINES AN ATTRIBUTE OF THE FIELD. I.E., WHETHER THE FIELD IS PROTECTED (P) FROM MODIFICATION BY A TERMINAL OPERATOR OR UNPROTECTED (U) AND THEREFORE AVAILABLE FOR MODIFICATION OR ENTRY OF DATA. THE TERMINAL RESPONDS TO A DATA STREAM WHICH INCLUDES A SINGLE PROGRAM TAB ORDER. IN EXECUTING THIS ORDER, THE CURRENT BUFFER ADDRESS IS ADVANCED TO THE ADDRESS OF THE FIRST CHARACTER LOCATION OF THE NEXT UNPROTECTED FIELD. IF THE ORDER IS ISSUED FOLLOWING AN ALPHAMERIC OR NULL CHARACTER, NULL CHARACTERS ARE INSERTED FOR ALL THE REMAINING CHARACTERS IN THE CURRENT FIELD, OTHERWISE, NO NULL CHARACTER INSERTION OPERATION TAKES PLACE.

DEFENSIVE PUBLICATION UN ITEI) STATES PATENT OFFICE Published at the request of the applicant or owner in accordance with the Notice of Dec. 16, 1969. S69 0.6. 687. The abstracts of Defensive Publication applications are identified by distinctly numbered series and are arranged chronologically. :Lhe heading of each abstract indicates the number of pages of specification. including claims and sheets of drawings contained ill the application as originally filed. The files of these applications are available to the public for inspection and reproduction may be purchased for 30 cents a sheet.

Defensive Publication applications have not been examined as to the merits of alleged invention. The Patent Office makes no assertion as to the novelty of the disclosed subject matter.

PUBLISHED JANUARY 22, 197% idsitmtfulismo' [P1105 liiLEiiifiWRii'ER l {@MMEEUJA 3 55E [PjPMiiE ttEEQsPHZl A terminal which includes an addressable message huffer for storing fields of data; the fields being defined as a group of consecutive characters starting with a field defining character followed by alphamcric characters and terminated by a field defining character which defines the beginning of the next field. The field defining character defines an attribute of the field, i.e., whether the field is protected [P] from modification by a terminal operator or unprotected [U] and therefore available for modification or entry of data. The terminal responds to a data stream which includes a single program tab order. In executing this order, the current buifcr address is advanced to the address of the first character location of the next unprotectcd field. If the order is issued following an alphameric or null character, null characters are inserted for all the remaining characters in the current field; otherwise, no null character insertion operation takes place.

Jan. 22, HARTMANN ETAL COMPUTER TERMINAL MESSAGE CONTROL Filed Nov. 13, 1972 8 Sheets-Sheet 1 DATA PROCESSING FIGJ SYSTEM 12 MULTIPLEXER TRANSMISSION m CONTROL 4 CHANNEL um'r SET DATA INTERFACE SET F I62 54 5a 46 MESSAGE LINE 32 BUFFER BUFFER 3 INPUT-OUTPUT 30 CHARACTER DIGITAL CONTROL UNIT GENERATOR SERIALIZER 4? INTERFACE FIG.3 E40 CHARACTEM -i LL FIGURE LINE 1 K n WOULD LINIE 2 Jan. 22, M. HARTMANN ET AL T918,012

COMPUTER TERMINAL MESSAGE CONTROL m m 6 w m m W35? 1 Es m Nw s M56 1 a s 232% 12 $85 8E8, 1 E: E 532% 1 v 0E MEB a @225 i 5:58 52 $309 5880 5:53 2m max E :58 E l d F 2 252% n 5&5 l2: :2 as a w 558: Uta a 1 0 5 z A 2 3 v. E m 3 d #5 5&5 HES m 2252 H 1 Q n 2 Es 8J9 a 1 E3 253 a: ,1 53 E3 1 a 2 E 1 3 mum E: 526 S: cm I 009 1 22a 1974 F. M. HARTMANN ETAL T9l8,0l2

COMPUTER TERMINAL MESSAGE CONTROL 8 Sheets-Sheet 3 Filed Nov. 13, 1972 CJL Jan. 22, 1974 F. M. HARTMANN FT AL T913912 COMPUTER TERMINAL MESSAGE CONTROL 8 Sheets-Sheet 4 Filed Nov. 13, 1972 iii a GE :0 EZEQEZD :25 GEES:

c T fl TI, D Q5 .frlili. 12-51:--- r 1 A H 7|, W WQZMSEwFm EL l T i d J: n a [E51 i A d I I: E JIIW] l .IJLJ E l l ET I I T [IT I 8m 3 $50 8x 525 155 fitg 3 GE 2 SSEQEZD mm ESE -53 MSG E0 E :m SE28 5w 5% #65 :53 8m Eta $5 Z0 :83 5 1855205 225 mm 2 $20 M583 $1 3 22 1974 F. M. HARTMANN ETM T918912 COMPUTER TERMINAL MESSAGE) CONTROL 258 35:9 :5: 559mm .X.

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m w E: 53 6 81 3 550 2 :25 2 :85 528 Gm 255 $1 3 E25 28% 1974 F. M. HARTMANN ET l T9l8,0l2

COMPUTER TERMINAL MESSAGE CONTROL 8 Sheets-Sheet 6 Filed Nov. 15, 1972 rcil'illl'l 885052: 65 w w E2 #58 33%? ES EDS 5:: Ego Gm 2E5 3m 2 593 S83 Bx OH 23 Jan. 22, F, HART-MANN ETAL COMPUTER TERMINAL MESSAGE CONTROL.

Filed Nov. 13, 1972 DATA STREAM 8 Sheets-Sheet 8 FIG."

([E'NAMEIEUIA B SEE [@sALARHuhmM [E108 TJTLEIKUIWRITER EE H NE fiJ]987452! 

